/*
 * Copyright 2008  Rivo Laks <rivolaks@hot.ee>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _WIDGETPROXY_H
#define _WIDGETPROXY_H


#include <QtGui/QGraphicsView>

class QGraphicsProxyWidget;

class GLWidget;

/**
 * @brief Embeds QWidgets in GLWidget
 *
 * WidgetProxy class allows easy embedding of QWidget subclasses inside a
 *  GLWidget. It tries to be as transparent as possible, continuing to use the
 *  GLWidget for rendering and doing smart event forwarding.
 * Mouse events are sent to the widget that is under the cursor. Keyboard
 *  events are sent to the widget that has focus. When user clicks outside any
 *  embedded QWidgets then focus is given to the GLWidget.
 **/
class WidgetProxy : public QGraphicsView
{
public:
    explicit WidgetProxy(GLWidget* w, QWidget* parent = 0);

    QGraphicsProxyWidget* addWidget(QWidget* w);
    QWidget* createWindow(const QString& title);

    GLWidget* mGLWidget;

protected:
    virtual void resizeEvent(QResizeEvent* event);
    virtual bool event(QEvent* event);
    virtual bool viewportEvent(QEvent* event);

    bool handleMouseEvent(QEvent* event, const QPoint& pos);
    bool forwardEvent(QEvent* event);


private:
    class Scene;
    bool mEventIsBeingForwarded;
};


#endif
